铁路基床翻浆冒泥路段道砟颗粒运动及力学特性研究  

Study on the Movement Patterns and Mechanical Characteristics of Ballast Particles in the Mud Pumping Section of Railway Trackbeds

作　　者：赵泽源 王莉苹 王天亮[1,2,3] 苏成 齐向阳 ZHAO Zeyuan;WANG Liping;WANG Tianliang;SU Cheng;QI Xiangyang(Key Laboratory of Roads and Railway Engineering Safety Control of Ministry of Education,Shijiazhuang Tiedao University,Shijiazhuang,Hebei 050043,China;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang,Hebei 050043,China;State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang Tiedao University,Shijiazhuang,Hebei 050043,China)

机构地区：[1]石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室,河北石家庄050043 [2]石家庄铁道大学土木工程学院,河北石家庄050043 [3]石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室,河北石家庄050043

出　　处：《河北工程大学学报（自然科学版）》2024年第4期44-51,共8页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金资助项目(52378453)。

摘　　要：为研究有砟轨道基床翻浆冒泥路段的道床动力学响应规律,自制了一套模型试验装置来模拟铁路基床翻浆冒泥过程,路基模型采用粉质黏土与道砟碎石填筑,在道床层不同位置处埋入三颗智能颗粒传感器实时监测道砟的振动加速度及运动姿态变化,分析洁净状态与不同翻浆冒泥程度对道砟颗粒加速度与运动姿态的影响。试验结果表明:泥浆侵入道床后,道床内道砟颗粒的振动变得更加剧烈,并且泥浆侵入道床程度的加深会提高道砟颗粒的振动水平;在洁净的道床中,道砟颗粒之间会产生较强的约束作用,道砟颗粒不易发生转动;无论在何种道床状态下,道砟颗粒绕横向、纵向转动的程度均大于绕竖向转动;当泥浆侵入道床之后,道砟颗粒会产生绕横向、纵向的较大转动,绕竖向旋转角度没有明显变化。In order to study the dynamic response of the ballast bed in the section of the ballast track foundation bed,a set of model test equipment was made to simulate the process of the railway foundation bed slurry.The subgrade model was filled with silty clay and ballast gravel,and three SmartRock sensors were embedded in different positions of the ballast layer to monitor the vibration acceleration and movement attitude changes of ballast in real time.The test results show that the vibration of ballast particles in the ballast becomes more intense after the mud invades the ballast bed,and the deepening of the mud invades the ballast bed will increase the vibration level of ballast particles.In the clean road bed,there will be a strong restraint between the ballast particles,and the ballast particles are not easy to rotate.Regardless of the track bed condition,the degree of ballast particles rotating around the transverse and longitudinal is greater than that around the vertical.When the mud intrudes into the ballast bed,the ballast particles will produce a large rotation around the transverse and longitudinal directions,and the rotation angle around the vertical has no obvious change.

关 键 词：有砟道床 智能颗粒传感器 模型试验 翻浆冒泥 振动响应 

分 类 号：U216.41[交通运输工程—道路与铁道工程]